package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StreamUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.xml.transform.Result;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //查询用户名
        if (emp == null){
            return R.error("登录失败");
        }
        //密码对比
        if (!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }
        //查看员工状态
        if (emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
        //登录成功，将员工id存入session并返回成功
        request.getSession().setAttribute("employee",emp.getId());


        return R.success(emp);
    }


    /**
     * 员工退出
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
   }

    /**
     * 新增员工
     * @param employee
     * @return
     */
   @PostMapping
   public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工",employee.toString());
        //md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
       employee.setCreateTime(LocalDateTime.now());
       employee.setUpdateTime(LocalDateTime.now());
       //获得用户id
       Long empId = (Long) request.getSession().getAttribute("employee");
       employee.setCreateUser(empId);
       employee.setUpdateUser(empId);

       employeeService.save(employee);
        return R.success("新增员工成功");
   }


    /**
     * 员工信息分页查询
     * @return
     */

   @GetMapping("/page")
   public R<Page> page(int page,int pageSize,String name){
       log.info("page={},pageSize = {} ,name = {}",page,pageSize,name);
       //构造分页构造器
       Page pageInfo = new Page(page, pageSize);
       
       //构造条件构造器
       LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
       //添加过滤条件
       queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
       //添加排序条件
       queryWrapper.orderByDesc(Employee::getUpdateTime);
       //执行查询
       employeeService.page(pageInfo,queryWrapper);
       return R.success(pageInfo);
   }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
   public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
       log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);



//        Long empId = (Long) request.getSession().getAttribute("employee");
//       employee.setUpdateTime(LocalDateTime.now());
//       employee.setUpdateUser(empId);
        employeeService.updateById(employee);
       return R.success("员工信息修改成功");
   }

    /**
     * 根据id来查询员工信息
     * @param id
     * @return
     */

   @GetMapping("/{id}")
   public R<Employee> getById(@PathVariable Long id){
       log.info("根据id来查询员工信息");
       Employee employee = employeeService.getById(id);
       if(employee != null){
           return R.success(employee);
       }
       return R.error("没有查询到对应员工信息");
   }



}
